Flue-sanding apparatus for locomotive fire boxes



April 27 1926.

Filed Sept. '2, 1919' 2 Sheets-Sheet 1 INVENTOR ATTORNEYS WWV: l W

April 21 1926. 1,582,203

A. H. WILLETT FLUE SNDING APPARATUS FOR LOCOMOTIVE FIRE BOXES Filedsept. 2., 1919 2 Sheets-Sheet 2 WITNESS:

' INVENTOR A TTORNEYS handle 14 being actuated lto admit air underpressure carrying sand in suspension through the pipe 9 through theelbow 10 and outlet nozzle 11, a stream of sand will be violentlyprojected toward the flue sheet as shown by the dotted line 20, and overthe whole sur face of the ends of the flues and eectively clean off anysoot or other objectionable formation which may tend to choke up thecoming from the-sides.

Still another arrangement is shown in Figure 4 in which, at 23 I haveindicated a special formation of block which' has the sand pipeconnected therewith from undeu neath, and with which there is norefractory wall or partition employed. Owing to the location of thesanding device in the front of the Acombustion space, in much the samerelation to the flue sheet as in Figs. 1 and 3, ready access of the sandblast to the flue sheet is secured.

IVhile it -will be observed that in the arrangement shown in Figures 1,2 and 4, the sand supply pipe comes up from underneath, it may beexpedient in some instances to bring the sand supply pipe in through theside walls of the fire box, and such arrangement I have shown in detailin Figures 5, 6 and 7 in which there is a pipe 24 coming in from eachside of the re box toward the center, each of said pipes being providedwith a plurality of nozzles 25 opening through apertures 26` in the sideof the corner brick of the refractory arch and Gaines wall structure(which structure is otherwise just about like that of Fig. 1).

In the several constructions illustrated, it will be seen, the forwardand upward-discharging sanding device is sheltered and protected by therefractory structure behind and above it (and especially by the brick orblock 21 and 28 in Figs. 3 and 4) from the hot furnace gases passing orsweeping forward to the boiler fines.

I claim:

1. lThe combination with a locomotive fire box and a refractorystructure obstructing the same behind the iiue sheet and lues, ofsanding means for them protected in said refractory structure anddischarging forward therefrom.

2. The combination with a locomotive boiler fire box and a refractorystructure in its lower forward' portion, of a sanding de vicedischarging forward and upward upon the boiler flue sheet sheltered andprotected by said refractory structure from the forward-sweeping furnacegases on their way to the boiler flues.

In testimony whereof I have signed my name.

ALFRED II. VILLETT.

hereunto

